Cast arguments to the correct `Long64_t` types. The methods signature are `TExMap::GetValue(Long64_t key)` and `TExMap::Add(Long64_t key, Long64_t value)`

* Fix \file references in doxygen markup

* Fix various "end of ..." warnings from doxygen.

This addresses warnings like:

- end of comment block while expecting command </b>
- end of comment block while expecting command </em>
- end of comment block while expecting command </pre>
- end of comment block while expecting command </s>
- end of comment block while expecting command </sup>
- end of comment block while expecting command </tt>
- end of comment block while expecting command </u>
- end of list marker found without any preceding list items
- found </em> tag without matching <em>
- found </li> tag without matching <li>
- found </pre> tag without matching <pre>
- found </sub> tag while expecting </sup>
- found </sup> tag without matching <sup>
- found </tt> tag without matching <tt>
- found </ul> tag without matching <ul>
- illegal </br> tag found
- reached end of file while inside a 'code' block!
- reached end of file while still inside a (nested) comment.
- unexpected end of comment while inside <a href=...> tag
- unexpected end of comment while inside <ul> block
- unexpected html tag <blockquote> found within <h1> context
- unexpected tag </h2> found
- unexpected tag </h3> found
- unsupported xml/html tag <it> found
- unsupported xml/html tag </it> found

* Adjust parameter names in doxygen markup so they match the code

Addresses warnings:

argument '<name>' of command @param is not found in the argument list
of <function>.

* Add missing underscore

* Make the name of macro match the filename

Fixes:

warning: Failed to call `rs302_JeffreysPriorDemo()` to execute the macro.
Add this function or rename the macro. Falling back to `.L`.

* Remove random control character in documentation file

* Remove /** comments */ from md files

* Fix a shadow warning.

Co-authored-by: Stephan Hageboeck <stephan.hageboeck@cern.ch>

Includes like "strlcpy.h" and "snprintf.h" are provided via Rtypes.h,
but really used only in part of the sources. Before removing them
from Rtypes.h (in dev builds) provide them all in required places

Moved TPDGCode.h (used in 'pythia6' and 'pythia8') from 'vmc' to to 'eg'; this makes all other libraries in 'montecarlo' not dependent on 'vmc'

This refactors the CMake build files to no longer manually call
the CMake functions for generating and linking the dicionairies.
One reason is to reduce boilerplate, the other is that it is now
no longer possible to have naming mismatches between the dictionary
generation arguments and linking function arguments which was causing
the race conditions we had in our build system.

This also now follows more strictly the separation between dependencies
like Math, Tree and Core and pure linking flags to external libraries.

ROOT_GENERATE_DICTIONARY allows to specify dependencies, but we currently
don't actually specify those. As we need this for getting the module
dependencies right (as we can't build missing modules on demand), we should
add those dependencies here. Then those dependencies propagate to the
rootcling invocation which will in the future also generate the C++ module
for the selected dictionary.

ClassImp is a macro defined in Rtypes.h. It can be written without trailing
semicolon. However, clang-format is based on lexing and it doesn't know at
all about preprocessors and how to expand macros. When visiting ClassImp(X)
it thinks this is not a completed entity (as it doesn't expand macros) and
considers the next line as continuation of the previous.

Inserting a semicolon fixes the issue and makes formatting with clang-format
in the ROOT codebase less tricky.

Many headers contains redundant header guards around #include directives:

    #ifndef ROOT_TTree
    #include "TTree.h"
    #endif

This patch removes the #ifndef's around these includes as they
don't serve any pratical purpose anymore and are no longer part
of the current ROOT coding convention.

This patch also fixes the 153 typos that are contained in the
symbols of the #ifndef directives.

Signed-off-by: Vassil Vassilev <vvasilev@cern.ch>

This reverts commit 5c076c6c.

This reverts commit b406328d, reversing
changes made to 318c7a47.

Make cannot deal with 'export *', they have to be escaped and fixed later on.

This is the recommended way of using the modules feature and should pave our way
of enabling -fmodules-local-submodules-visibility mode.

Our two build systems can generate almost entirely a modulemap file laying out
one module per library. Due to some non-modular implementation in ROOT's core we
still need to treat some header files specially.

This patch appends modular header files to the modulemap while skipping the
predefined ones. Configure-make relates all headers that are installed in
$ROOTSYS/include to their library whereas relates only headers which are part of
library's dictionary.

All files, which depend on the definition of TBuffer, should include TBuffer.h.

Fixes the modules build.

Document this backward incompatible change.

Conflicts:
	bindings/pyroot/src/MethodProxy.cxx
	cmake/modules/RootConfiguration.cmake
	etc/http/files/main.htm
	etc/http/files/single.htm
	geom/geompainter/src/TGeoChecker.cxx
	graf2d/mathtext/inc/mathtext.h
	graf2d/mathtext/src/fontembed.cxx
	graf2d/mathtext/src/fontembedps.cxx
	graf2d/qt/inc/TQtCanvasPainter.h
	gui/qtgsi/src/TQRootCanvas.cxx
	hist/hist/src/TBackCompFitter.cxx
	hist/hist/src/TEfficiency.cxx
	hist/hist/src/TFractionFitter.cxx
	hist/hist/src/TGraphAsymmErrors.cxx
	hist/hist/src/TH2.cxx
	hist/hist/src/TH3.cxx
	hist/hist/src/TMultiDimFit.cxx
	hist/hist/src/TProfile.cxx
	hist/hist/src/TProfile2D.cxx
	hist/hist/src/TUnfoldBinning.cxx
	html/src/TDocParser.cxx
	math/foam/src/TFoam.cxx
	math/genvector/inc/Math/VectorUtil_Cint.h
	math/minuit2/inc/Minuit2/FumiliMaximumLikelihoodFCN.h
	math/minuit2/inc/Minuit2/FumiliStandardChi2FCN.h
	math/minuit2/inc/Minuit2/FumiliStandardMaximumLikelihoodFCN.h
	math/minuit2/inc/Minuit2/StackAllocator.h
	math/minuit2/src/TChi2ExtendedFCN.cxx
	math/minuit2/src/TChi2FCN.cxx
	math/minuit2/src/TFitterMinuit.cxx
	math/minuit2/src/TFumiliFCN.cxx
	misc/table/src/TTableDescriptor.cxx
	net/auth/src/rsaaux.cxx
	test/QpRandomDriver.cxx
	test/ios/RootBrowser/Src/Browser/Controllers/FileCollectionViewController.mm
	test/ios/RootBrowser/Src/Browser/Controllers/FileContentViewController.mm
	test/ios/RootBrowser/Src/Browser/Controllers/ObjectViewController.mm
	test/ios/RootBrowser/Src/Browser/Views/PadView.mm
	test/ios/RootBrowser/Src/CustomUI/RangeSlider.mm
	test/ios/RootBrowser/Src/ObjectInspector/Controllers/AxisFontInspector.mm
	test/ios/RootBrowser/Src/ObjectInspector/Controllers/AxisInspector.mm
	test/ios/RootBrowser/Src/ObjectInspector/Controllers/AxisLabelsInspector.mm
	test/ios/RootBrowser/Src/ObjectInspector/Controllers/AxisTitleInspector.mm
	test/ios/RootBrowser/Src/ObjectInspector/Controllers/FilledAreaInspector.mm
	test/ios/RootBrowser/Src/ObjectInspector/Controllers/H1BinsInspector.mm
	test/ios/RootBrowser/Src/ObjectInspector/Controllers/H1ErrorsInspector.mm
	test/ios/RootBrowser/Src/ObjectInspector/Controllers/H1Inspector.mm
	test/ios/RootBrowser/Src/ObjectInspector/Controllers/InspectorWithNavigation.mm
	test/ios/RootBrowser/Src/ObjectInspector/Controllers/LineInspector.mm
	test/ios/RootBrowser/Src/ObjectInspector/Controllers/MarkerInspector.mm
	test/ios/RootBrowser/Src/ObjectInspector/Controllers/ObjectInspector.mm
	test/ios/RootBrowser/Src/ObjectInspector/Controllers/PadInspector.mm
	test/ios/RootBrowser/Src/ObjectInspector/Controllers/PadTicksGridInspector.mm
	test/ios/Tutorials/PadOptionsController.mm
	test/ios/Tutorials/PadView.mm
	test/periodic/NdbMF.cxx
	test/periodic/NdbMTReacDesc.cxx
	test/periodic/NdbMTReactionXS.cxx
	test/periodic/NdbParticleList.cxx
	test/periodic/XSGui.h
	test/stressLinear.cxx
	test/stressRooFit_tests.cxx
	test/tcollbm.cxx
	test/vmatrix.cxx
	tutorials/eve/boxset.C
	tutorials/geom/geodemo.C
	tutorials/graphs/splines.C
	tutorials/hist/th2polyEurope.C
	tutorials/mc/CompareMasses.C
	tutorials/memstat/memstat.C

rootcling will write out ROOT files; that does not work for libCore and RIO
which instead use rootcling_tmp.
All other libraries use rootcling -rootbuild.
Rename ROOTCLINGTMP to ROOTCLINGSTAGE1; rootcling -rootbuild is ROOTCLINGSTAGE2.